No, long-term non-progressors have seroconverted and are in the stage of chronic HIV infection. They maintain low viral load and healthy levels of CD4 cells, however, either indefinitely or for a much longer period of time than the typical 10-year course of infection.
Some people who are exposed to HIV manage to shake the infection off before seroconversion. Their bodies eliminate HIV. We don’t know how common it is. Some virologists think it is very common.
When somebody takes PrEP, they’re helping their bodies to eliminate HIV after exposure and initial infection, but before seroconversion starts.
Once seroconversion begins, it’s game over. HIV is there for good, for life.
Although with antiretroviral treatment, viral levels can remain permanently suppressed, and CD4 levels can remain very high.